They're also handy to add to a few loads of fresh spunk when adding to food and inviting people for dinner. Love watching my friends, neighbors, and work colleagues swallowing my filthy cock-slime unknowingly.
I used to do the same thing. I would let it melt in my mouth and drool it down on my cock while fucking my wife. Once I did the same thing with cum from a guy I sucked regularly. She never knew it was someone else's cum.